Revert "So Better"

This reverts commit 52ae95ec64470d506b34fff08d628bc7a2e1ce48.
Revert "Performance Settings Credits : Slimroms And CM"

This reverts commit c8d98ea68f581658f772ad2a72662251a95e6f70.
No back icon in action bar of APN Settings

When entering the APN menu, the actionbar is missing a back
icon allowing the user to go back to the previous pane.

Added parentActivityName in ApnSettings, to enable action
bar back icon.

Change-Id: Iee8bb420f47c0e2c0d9a43739f534466abba30db

Conflicts:
	AndroidManifest.xml
Settings: Forward port Performance settings

Change-Id: Ib510b35fc2763c6942737afa33873aa5d349a173

Conflicts:
	AndroidManifest.xml
	res/values/arrays.xml
	res/values/strings.xml
	res/xml/settings_headers.xml

Conflicts:
	res/xml/settings_headers.xml